Many deer in Texas die from a 243 so it must be ok for that HOWEVER it was designed as a varmint cartridge.
My daughter and I have killed a number of whitetail deer on our ranch with hers.
Yes, I aware elk have / or killed with it but then the Eskimos have killed P-bears with a 22 Hornet...no...
Harry Hunter from Hunters Headquarters in Bedford, TX (SW corner of D/FW airport.) but better known as Mims Reed. Harry is the little safari guy logo on the business card.
Age 62, married with two grown kids and 3 grand daughters.
Own hunting store in Bedford and three ranches in west Texas...